Granted Patent
Utility
US 6,402,385 · App. 09/632,712
Dynamic pressure bearing apparatus
Inventors:
Masamichi Hayakawa, Hisaya Nakagawa, Michiaki Takizawa
Patented Case
View Patent ↗
Granted: Jun 11, 2002
Filed: Aug 4, 2000
Inventors
Masamichi Hayakawa
Hisaya Nakagawa
Michiaki Takizawa
Assignee (at issue)
Sankyo Seiki Mfg. Co., Ltd
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.